Design and Performance Analysis of Compact Planar Inverted-L Diversity Antenna for Handheld Terminals

Authors:
Hai Lin Xiao;Shan Ouyang;Zai Ping Nie
Affiliations:
School of Information and Communications, Guilin University of Electronic Technology, Guilin, China 541004;School of Information and Communications, Guilin University of Electronic Technology, Guilin, China 541004;School of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu, China 610054
Venue:
Wireless Personal Communications: An International Journal
Year:
2010

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Abstract

A compact planar inverted-L diversity antenna for handheld terminals is presented. Three diversity antennas operating at 2.15GHz are designed. The isolation is found to be higher than 13 dB and the usable bandwidth is about 13% in measurement. The measured radiation patterns of the proposed diversity antenna attain 2 dBi gain. Furthermore, the diversity performance with mean effective gain (MEG) is evaluated by taking both azimuth and elevation spectrum into account. A closed-form expression for MEG is presented. The effect of some parameters on MEG is analyzed numerically in indoor propagation environments.